A sheet conveying apparatus according to the present invention includes a first conveying roller, a second conveying roller, a third conveying roller, a first motor configured to drive the first conveying roller, a phase determiner configured to determine a rotational phase of a rotor of the first motor, a controller configured to control a driving current flowing through a winding of the first motor, and a discriminator configured to, based on the number of times an absolute value of a value of a parameter corresponding to a load torque applied to the rotor changes from a value smaller than a predetermined value to a value greater than the predetermined value, discriminate at least one of whether a front end of a sheet reaches a nip portion of the first conveying roller and whether a rear end of the sheet passes through the nip portion of the first conveying roller.

A controller for a printer, a printing system, method for controlling a printer and a software medium are disclosed. The controller includes a process monitor configured to determine which images of a plurality of images are currently being processed simultaneously by the printer; and a display configured to indicate to a user, based on the determining by the process monitor, which images of the plurality of images are currently being processed simultaneously by the printer.

An image reading device includes a turning unit, a hinge, and a reading unit having a reader that reads a sheet image. The hinge turns the turning unit which turns relative to the reading unit. The reader reads, through a reading unit reading glass, an image on a sheet placed on the reading glass. The turning unit includes a pressing plate, a conveying roller, a motor, and a communication unit. The pressing plate presses a sheet against the reading glass when the turning unit is at a position closing the reading glass. The motor rotates the conveying roller to convey a sheet. In a direction perpendicular to a turning axis line direction of the hinge, the motor is disposed on one side of the turning unit. The communication unit is disposed on the other side and receives data from outside of the image reading device.

An image forming apparatus includes an image data generator, a conveyor conveying a print medium, a determiner, a print medium cutter, a printing section, and a printing controller. The image data generator performs, sequentially on a page basis, conversion of print data corresponding to pages included in a print job into image data. The determiner determines a specified number of pages. The print medium cutter cuts the print medium into media for each of the specified number of pages. The printing section performs, on the print medium, printing of an image-data-based image. The printing controller causes the printing section to start the printing of the image corresponding at least to the specified number of pages, after the conversion of the print data into the image data corresponding at least to the specified number of pages and before that into the image data corresponding to all of pages.

In an example, a print system include a component device that is operation in a number of state, a density engine, and a component engine. An example density engine identifies a plane region of a plane where print fluid is to be printed based on data of a print job and determines a density classifier for the plane based on a location of the plane region on the plane. An example component engine causes an adjustment of a component attribute of the component device based on the density classifier.

A scanner includes a reading section configured to read a medium being transported, a discharge roller pair configured to nip the medium read in the reading section by a first roller and a second roller and discharge the medium, and a rib disposed in a position overlapping the discharge roller pair in a medium transport direction, the rib protruding from the first roller side toward the second roller side out of the first roller and the second roller, the rib including a first rib disposed on one side in a width direction intersecting the medium transport direction with respect to the discharge roller pair and a second rib disposed on the opposite side of the first rib in the width direction with respect to the discharge roller pair.

An image reading apparatus includes an image reading unit, a document pressing unit, a first position detection unit, a second position detection unit, and a controller. The image reading unit reads an image of a document. The document pressing unit presses the document against a document placement component. The first position detection unit detects a first closed position at which the document pressing unit is not in contact with the document placement component. The second position detection unit detects a second closed position that is closer to the document placement component than the first closed position is. The controller performs first width detection on the document and further performs second width detection. The first width detection is performed in accordance with detection performed by the first position detection unit on a closing operation of the document pressing unit. The second width detection is performed after elapse of a predetermined time in accordance with detection performed by the second position detection unit on the closing operation of the document pressing unit. If the controller receives an image reading instruction before the elapse of the predetermined time, the controller performs the second width detection without waiting for the elapse of the predetermined time and starts an image reading process.

An image reading apparatus includes an image reading unit, a document pressing unit, a first position detection unit, a second position detection unit, and a controller. The image reading unit reads an image of a document. The document pressing unit presses the document against a document placement component. The first position detection unit detects a first closed position at which the document pressing unit is not in contact with the document placement component. The second position detection unit detects a second closed position that is closer to the document placement component than the first closed position is. The controller performs first width detection on the document and further performs second width detection. The first width detection is performed in accordance with detection performed by the first position detection unit on a closing operation of the document pressing unit. The second width detection is performed after elapse of a predetermined time in accordance with detection performed by the second position detection unit on the closing operation of the document pressing unit. If the controller receives an image reading instruction before the elapse of the predetermined time, the controller performs the second width detection without waiting for the elapse of the predetermined time and starts an image reading process.

A sheet transport apparatus is equipped with a sheet transport guide section for guiding a sheet to be transported. The sheet transport guide section includes a first transport guide member swingable about a first axis, and a second transport guide member swingable about a second axis, the second transport guide member forming a sheet transport path between the second transport guide member and the first transport guide member. The second transport guide member is arranged at a first position when the first transport guide member is closed, at a second position where the second transport guide member is opened from the first position when the first transport guide member is opened, or at a third position where the second transport guide member is opened from the second position.

A multi-feed detection device includes a transmission circuit substrate on which an ultrasonic transmitter transmitting an ultrasonic wave is installed, and an ultrasonic receiver having a receiving surface which receives the ultrasonic wave. The ultrasonic transmitter transmits the ultrasonic wave in a direction intersecting a thickness direction of the transmission circuit substrate, and a cross-section of the ultrasonic wave orthogonal to an advancing direction of the ultrasonic wave is wider than the receiving surface seen from the advancing direction of the ultrasonic wave.